Acanthite

Imiter, Atlas Mountains, Morocco

Beryl var. Aquamarine

Quy Chau District, Nghe An Province, Vietnam

Diopside

Merelani Hills, Lelatema Mtns., Arusha Region, Tanzania

Opal var. Hyalite

San Luis Potosi, Mexico

Opal: Rough and Cut

Shoa Province, Ethiopia

Sphalerite on Quartz

Shuikoushan Lead/Zinc Mine, Chaling, Hunan Province, China